webpack.common.js

var HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = {
    entry: {
        app: ["babel-polyfill", "./src/index.jsx"]
    },
    output: {
        filename: "[name].[hash].bundle.js",
        chunkFilename: "[name].[hash].chunk.js",
        path: __dirname + "/build/",
        publicPath: "/"
    },
    resolve: {
        extensions: [".webpack.js", ".web.js", ".mjs", ".js", ".json", ".jsx"]
    },
    module: {
        rules: [
            {
                test: /\.mjs$/,
                include: /node_modules/,
                type: "javascript/auto"
            },
            {
                test: /\.jsx?$/,
                exclude: /(node_modules|bower_components)/,
                use: [
                    // style-loader
                    { loader: "react-hot-loader/webpack" },
                    {
                        loader: "babel-loader",
                        options: {
                            presets: [
                                "@babel/preset-env",
                                "@babel/preset-react"
                            ]
                        }
                    }
                ]
            },
            {
                test: /\.(css|scss)$/i,
                use: ["style-loader", "css-loader", "sass-loader"]
            },
            {
                test: /\.(gif|png|jpe?g|webp)$/i,
                use: [
                    "file-loader",
                    {
                        loader: "image-webpack-loader",
                        options: {
                            bypassOnDebug: true, // webpack@1.x
                            disable: true // webpack@2.x and newer
                        }
                    }
                ]
            },
            {
                test: /\.svg$/,
                use: [
                    {
                        loader: "svg-url-loader",
                        options: {
                            limit: 10000
                        }
                    }
                ]
            },
            {
                test: /\.(woff(2)?|ttf|eot)(\?v=\d+\.\d+\.\d+)?$/,
                use: [
                    {
                        loader: "file-loader",
                        options: {
                            name: "[name].[ext]",
                            outputPath: "fonts/"
                        }
                    }
                ]
            }
        ]
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: "./src/index.html",
            favicon: "./src/favicon.png"
        })
    ],
    optimization: {
        splitChunks: {
            cacheGroups: {
                default: false,
                vendors: false,
                vendor: {
                    name: "vendor",
                    chunks: "all",
                    test: /node_modules/,
                    priority: 20
                },
                common: {
                    name: "common",
                    minChunks: 2,
                    chunks: "async",
                    priority: 10,
                    reuseExistingChunk: true,
                    enforce: true
                }
            }
        }
    }
};